just my opinion &
I reserve the right to be wrong 
or to continue to learn & change my mind
but seems to me the Red Sea table is saying this to take into account "all states of LR"
at one time, I thought wc during cycling was not needed & even possible bad,
now I think... it's related to the state of your LR
Here a good :read:
How to Cure Live Rock
and a partial extract... but read the whole post/link
Are Water Changes Needed?
Basically the curing process is now set. It is just a matter of time until the rock is fully cured. Depending upon the amount of matter on the rock and the water flow and skimmer you have, the process will take about 2 to 4 weeks. You can also reduce the nutrient levels in the curing water and lessen the curing time by having more water flow and a bigger, more effecient skimmer and by changing a portion of the water in the tank or curing container. A schedule of changing 25%-50% of the water every week is usually best, but you can alter this according to your results as you cure the rock. Many folks do minimal water changes and still cure their rock rapidly, but this can only be accomplished if you have other means of waste removal such as a really good skimmer. The amount and frequency of water changes are something that will be different for every tank and system so you must determine if and when you will need to do water charges, some water changing is probably needed but you don't need to be excessive. Remember to use pure water when mixing your salt water for the water changes otherwise you are just adding more nutrients to the system and the water change is useless. During the curing process you will also need to add purified freshwater to keep up with any evaporation to keep a constant salinity level in the tank or curing container water, your water's specific gravity should be about 1.025.
